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Nighthawk CO detector from 1996, fix?
I have a CO detector which was given to me. It doesnt appear to be functional as it reads ---. and 0 when I press the test button. Is the sensor replaceable?
I am fairly electronics literate, spent three years in an EE program once, had to drop out for financial reasons. Have a small electronics bench and all the major tools. logic analyzer, bench multimeter, scope, siggen/AWG . Hoping to get a meter with PPM resolution which will last for a few years. Does anybody know the replacement cost of the sensor?